Christina Aguilera’s deep level of involvement in all facets of her career has been spurred by her own admitted workaholic tendencies. “I feel like I always need to work,” she tells Billboard. It also was borne from past bad experiences. “The first record was an uphill battle for me, and I really feel like I paid my dues on that first record,” Aguilera explained. “Being part of a huge pop explosion, I was very pushed by the label to be, act, dress a certain way, and it was tough.”